| 摘要 |
PROBLEM TO BE SOLVED: To conduct the cooling design of a motor body and a control unit individually, so as to use the motor body also as a constant speed motor by forming opposite surfaces of a case storing the control unit and the motor out of a material whose thermal conduction is low. SOLUTION: A portion between a motor body 10 and a case-fitting part 22 for control unit 20 case receives the radiant heat of the motor body 10, even if an aerial layer 30 is formed. Therefore, the material of the case-fitting part 22a is formed out of a material whose heat resistance is high, such as an insulation member to reduce the thermal effect further, by which it is possible to reduce thermal effect upon the inside of the control unit 20 further. By applying metallic processing with metal, such as aluminum or zinc to an opposing surface of the case-fitting part 22 to the motor body for finishing it to a glossy surface, the reflectance of radiant heat becomes higher, so that the control unit 20 can further reduce the thermal effect from the motor body 10. |
